Throttle-valve.



F. H. CLARK & J. Nl. COFFEY.

THROTTLE VALVE. APPLICATION FILED MAY 23. |911.

Patented Oct. 9, 1917.

3 SHEETS-SHEET l.

F. H. CLARK 6I J. M. COFFEY.

.THRO'TTLE VALVE. APPLICATION FILED MAY 23. 19u.

19%42380" 3 sHEETs'- HEET 2 I I WHIII Ill I `I IIIITIIuj IIII II II 'r ...ML N

Patented Oct. 9 1917.

F. H. CLARK SI1. M. CQFFEY. l,

THROTTLE VALVE.

APPLICATION FILED MAY 23.1911.

3 SHEETS-SHEET 3.

Zan? di@ Hmm m a :FRANK GLARK`AND JOSEPH M. COFFEY s PTET r NEW YORK, n. Y., AssIGNons To CHAMBERS VALVE COMPANY, OF NEW YORK, IN.' Y.

THROTTLE-VALVE.

Specication of Letters Patent.

Patented Oct. 9, 1911*?.

Application ledfMayZS, 1917. Serial No. 170,519.

.To all wwmit may concern 'Be yit `know-n thatwe, `FRANK 11, CLARK and JOSEPH M. Correr, citizens of the- United' States, residing at New York, inthel county of New York and State of vNew York, have invented certain new andL useful.

Improvements in .Throttle-Valves, of which f the following is a specification.

This invention relates to throttleevalve vameterV which results in the kreduction @in height of the superstructure such .as the smoke stack, steam dome, etc. As is fof course known in `most cases, the throttle valve is `located within the steam `doineand it is necessary that kthe throttle valve be placed kabove the water line and as high as possible therein. The actuating mechanism therefore `preferably extends outwardlythrough `the side ofthe dome and thenceV rearwardly to the cab. F or1ceitaiirreasons throttle valves of the'lifttype. are preferred,

that is, valves in which the actuating mech. with the underside anism is connected thereof and the present invention is directed more particularlyto mechanism which permits the transmission of power from a point without the steam dome to this type of throttle valve.

With thisiexplanation .in mind, some of the objects of the present invention are to provide a suitablethrottle Vvalve actuating mechanism foruse-in very low steam domes which will be of simple` construction, inex-v pensive toy manufacture andfinstall, and vreliable and eflicient inyuseand operation.

Azfurther object is to provide a construction ofthe above s general character in'gwhichla leakage of steam to the stuiiing box isfposi-l tively` prevented Awhen `t-he throttle .i valve `is closed. Afurther vrobject isito,` provide mechanism of the above character ,which r5G` permits inspection Aand 'repairing i of` the sti1i^hng;box,`-vvliile the engine is under steam. ,.ther yobjects will be in partV obvious from the: annexedidrawings; and part indicated in connection therewith by the following analysis of this invention.

This invention `accordingly consists in the featuresr of construction, combination of parts and in the unique relations of the members and in the relativeproportioning and disposition thereof, all as more completely outlined herein.

To enable others skilled in the art so fully to comprehend the underlying features thereof that they may embody the same by the numerous modifications in structure and relation contemplated by this invention', drawings depicting two preferred fornishave been annexed asa part ofnthis disclosure, and in such drawings, like characters of reference denote corresponding parts throughout all. the views, in which- Figure lis an elevational view partly-in section showing such parts of the invention as are necessary to fully understand the same;

Fig. 2 is an elevational view partly in sec-` tion takenat right rangles to F ig. 1;

Fig. 3 is a detail, and

F'gs. l and 5 show a modification.

Referring now to the drawing in detail 5 denotes a boilershell provided with steam dome A6 within which is located a throttle valve box 7 having dry pipe connection 8 at the bottom thereof. rllhe actual valve structure which forms no real part of the present invention -is substantially the saine as that illustrated and described in our prior Patent 1,220,729, March 27,1917, except that the actuating connection isthrough the underside of the balance chamber instead of abovefthe throttle valve as shown inthis patent. It is` believed that this requiresno further detailed description. Y

On the outside of the steam dome. G islocated a stuffing box preferably of that character shown in ourco-pendinrg application Serial Number 98651filed MayrlQ, 1916, although other formsI ofv stuffing boxes Vmay be used if Lso desired. It istherefore believed tobe sufficient for the present disclosure to permitthe numeral ;10 to repre'- sent the end of this stuffing box through which-,an` actuating shaft 11 passes. This shaft-.is yinclosed withinl a' sleeve 12 passing through aflarlge or cover kmember 13 bolted,

toi-thefthrottlebox7 andV provided witha y tion or repacking of the Stuffing box without ground ,face yinsuring tight construction. n is provided with a squared end fitting with-4 in a crank 14 whereby. it may be easily moved outA laterally asfwill hereinafter appear. is connected by means of a link free end of a second crank 16 similar' in size and shape to the crank arm 14. rlhis crank arm 16 is mounted upon one end of a'shaft 17, the` opposite end of whichis squared at 18 and is connected with the throttle valve crank arm 19 as shown."A rhisconstruction '-"insures equal or proportional angular'move ment of the two shafts 11 and 17.v

The crank arms 14 and lvtogether with. the link 15 are mounted' within aV chamber: 20 vin the side wallof the throttle box andA the shaft 17 passes through substantiallyy asteam-tight connection Ain the partition to the interior'ofthe throttle box which is justV above the dry pipe connection. It will thus be seen that lwhenv vthe throttle valve is closed and Athere is no steampressure VwithinY thedry pipe the actuating shaft 11v may be removed from the sleeve 12 to permit inspecdanger of the steam escaping.

rIn Figs.A t and 5, thereis illustrated a slight modication showing a dierent man-v `Al projection 23 within the chamber limits the movement of the upper crank arm and adjacent the shaftk 17 in the lower part of the chamber is provided a removable plug 24 permitting access to the connection between the link or crank arm and shaft 17. The construction, method of use and operation of this modification are substantially the same as abovedescrihed in connection with the modification shown in Fig. 1.

' It is believed that the construction, operation andmethod of use of devices of this character are clear from the above description and that a further discussion thereof is unnecessary. It will be seen` that the 'in-1 vention is of'simple and practical construc-v ytion particularly adapted for Vuse in'connection.. with lift'throttle valves on locomotive boilers having relatively low steamV domes. I Without Yfurther analysis,`the foregoing will so fullyreveal the gist of this invention' thatothers can by applying current knowledge readily adapt it forfvariousapplicaa substantially steam@y riihe actuating rod ,111.;

The other end'of the crank arm 14 15 tothev tions without' omitting certain features that".

rare intended to be'cofmprehendedwithin the Vmeaning and range of equivalency of the following claims. Having thus described our invention what we'claiin as new and desire to secure yby Letters .Patent is: L

1. In combination with a steam dome having a throttle box therein, actuating mecha-v nism thereforfcomprising a pairl of shafts one of which extends l'through the 'steam dome for connection with the. .actuating mechanism within the cab and the .other extends 4into the throttle box for connection'` with the throttle valve, andv means connecting said shafts whereby they have equal ani gular rotation. y

V2. Inv comb'nation with a steam domehaving a throttle valve of the Vlift type,.a pair. of shafts one ofwhichextends outwardly through the steam domeforconnection with the actuating mechanism inthe cab, and the other of which extends laterally into the throttle Vbox for connection with; the .under` 3'. In combination wltha steam domehav-A ing a throttle valve .of the lift type, a pairy of? shafts one vof Ywhich extends' outwardly through the steam dome for .connection with the actuating mechanism in the cab, and the other vof which extends laterally into thethrottle box for connection with the under side Aof the throttle valve, and means connecting said shafts for transmitting equal angular rotative movement, said connection .comprising a crank arm on each shaft, and a link connecting said crank arms. f l

4L. In combination with a steam dome having a throttle box therein containing a throt-` tle valve ofthe lift type, a chamber in the side of said throttle box, a shaft extending from said chamber outwardly through the side of the steam dome, a second. shaft extending from said chamber inwardly to the under side of the throttle, a pair .of crank rarms on said last mentioned shaft, a crank arm on the shaft vextending outwardly through the steam dome, and a'link connection betweenl the latter crank arm and one ofl thev crankV arms on the shaft associated withthe throttle box.

5; In combination with a steam dome havf ing va'throttle-box therein containing a throttle valve of theL lift type, a chamber 'in' the proportional side of saidthrottlei box, a. shaft extending f from ysaid 'chamber outwardly through the side'of-the steam1dome,'a sleeve extending from said chamber outwardly through thel y() f 4 each shaft and a link connection therebe- 1,242,sso r dome and inclosing said shaft, a stuffing box associated with the sleeve at the point where it passes through said steam dome, a second shaft parallel with the first shaft extending into the throttle box and connected with said first mentioned shaft for transmitting motion from a point without the steam dome to the throttle valve, said parts being so positioned and arranged as to permit a removal of the first mentioned shaft from within its sleeve when the throttle valve is closed.

6. In combination with a steam-dome havmeans connecting said shafts whereby they rotate proportionally.

7. In combination with a steam dome having a throttle box therein, a valve of the lift type within said throttle box, said box having a face containing a chamber, a removable steam tight cover for said chamber, a pair of parallelly disposed shafts one of which extends from the chamber outwardly through the steam dome and the other from the chamber into the throttle box where it is connected with said throttle valve, meansA connecting said shafts whereby they rotate proportionally, said means including a crank arm on each shaft and a link connection therebetween.

8. In combination with a steam dome having a throttle box therein, a valve of the lift type within said throttle box, said box having a face containing av chamber, a removable cover for said chamber, a pair of parallelly disposed shafts one of which extends from the chamber outwardly through the steam dome and the other from the chamber into the throttle box where it is connected with said throttle valve, means connecting said shafts whereby they rotate proportionally, said means including a'crank arm on tween, each of said shafts having irregular ends at their points of connection with the crank arms whereby the parts may be easily Y disassembled by lateral movement on removal of the cover.

9. In combination with a steam dome containingV a` throttle box with a throttle valve therein, the wall of said throttle box containing a chamber having a removable cover, a sleeve extending between the cover and the outer side of said steam dome having a stuiiing box connection at its outer end, an actuating shaft removably mounted in said sleeve and extending from outside of the dome into said chamber, a second shaft parallel with the first shaft extending from the chamber into the throttle box,and link connections between said shafts for producing proportional angular rotation thereof.

l0. In combination with a steam dome containing la throttle box with a throttle valve therein, the wall of said throttle box, containing a chamber having a removable cover, a sleeve extending between the cover and the outer side of said steam dome having a stuiiing box connection at its outer end, an actuating shaft' removably mounted in said sleeve and extending from outsidey of the dome into said chamber7 a second shaft parallel with the first shaft extending from the chamber into the throttle box, link connections between said shafts for producing proportional angular rotation thereof, said means including a pair of cranks on each shaft, one above the other within said chamber, and a link connecting the free ends of said cranks.

l1. In combination with a steam dome having a throttle box therein, actuating mechanism therefor comprising a pair of parallel shafts, said throttle box having a pocket in its wall with a removable cover at the top thereof, one of said shafts passing from the outside of the throttle box into the pocket, while the other shaft extends from the pocket to a point below the throttle valve, and means connecting said shafts for producing proportional angular rotation.

In testimony whereof we aiix our signatures in presence of two witnesses.

FRANK H. CLARK. JOSEPH M. COFFEY. Witnesses: f

A. B. FAHNEsTooK, E. GOODMAN.

Copies of this patent `may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. G. 

